Went out to clean up my rose bed today, and it is full of ants! I mean 3 or 4 different colonies. When I lifted up my stepping stones, they were everywhere. In the past when I had ants in the yard, I always just sprinkled the ant granuals from the canister (dursaban??? maybe) on them, but didn't know if that would damage any plants I plan on putting in the flower bed. Does anyone have any suggestions for a plant safe but effective treatment? Thanks guys!